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convert '1' to '0001' in JavaScript [duplicate]
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This is a clever little trick (that I think I've seen on SO before):
var str = "" + 1
var pad = "0000"
var ans = pad.substring(0, pad.length - str.length) + str
JavaScript is more forgiving than some languages if the second argument to substring is negative so it will "overflow corre...
Rails hidden field undefined method 'merge' error
...e also write <%= hidden_field_tag :service, "test" %> when not using form_for |f| ...
– Augustin Riedinger
Sep 24 '14 at 13:30
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Getting a Custom Objects properties by string var [duplicate]
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if you want something to work for nested objects and you can use lodash something like _.map([object], _.property(propertyPath))[0]; would work.
– bobwah
Mar 23 '17 at 10:24
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What's the common practice for enums in Python? [duplicate]
What's the common practice for enums in Python? I.e. how are they replicated in Python?
4 Answers
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Looping over a list in Python
...ual to 3.
>>> mylist = [[1,2,3],[4,5,6,7],[8,9,10]]
>>> for x in mylist:
... if len(x)==3:
... print x
...
[1, 2, 3]
[8, 9, 10]
or if you need more pythonic use list-comprehensions
>>> [x for x in mylist if len(x)==3]
[[1, 2, 3], [8, 9, 10]]
>>>
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Add custom headers to WebView resource requests - android
...EVERY request coming from the WebView. I know loadURL has the parameter for extraHeaders , but those are only applied to the initial request. All subsequent requests do not contain the headers. I have looked at all overrides in WebViewClient , but nothing allows for adding headers to resource...
How do I find all of the symlinks in a directory tree?
I'm trying to find all of the symlinks within a directory tree for my website. I know that I can use find to do this but I can't figure out how to recursively check the directories.
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What are the Ruby File.open modes and options?
...only, truncates existing file
| to zero length or creates a new file for writing.
-----+--------------------------------------------------------
"w+" | Read-write, truncates existing file to zero length
| or creates a new file for reading and writing.
-----+-----------------------------...
Open existing file, append a single line
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You can use File.AppendAllText for that:
File.AppendAllText(@"c:\path\file.txt", "text content" + Environment.NewLine);
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Hibernate: Automatically creating/updating the db tables based on entity classes
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Sometimes depending on how the configuration is set, the long form and the short form of the property tag can also make the difference.
e.g. if you have it like:
<property name="hibernate.hbm2ddl.auto" value="create"/>
try changing it to:
<property name="hibernate.hbm2ddl....